1. The problem current reaches or exceeds the set operating current value.
2. The problem current continues to arrive at the set time of action.
Therefore, it is necessary to ensure that the Delixi circuit breaker will not trip beyond its liquid level. The current setpoint and the time setpoint must match the outstanding. If the overcurrent maintenance setting value of the primary circuit breaker is 700A and the continuation time is set to 0.6 seconds, then the filter maintenance setting value of the secondary circuit breaker should be decreasing according to a certain share, such as setting the current to 630A and setting the time to 0.3 seconds. In this case, if there is a problem in the maintenance of the secondary circuit breaker, regardless of whether the faulty current reaches the stator of the primary circuit breaker, when the faulty current continues to 0.3 seconds, it will be cut off by the secondary circuit breaker and will not reach 0.6 seconds of the primary circuit breaker.
Whether it's a short circuit problem or a grounding problem, the type of maintenance is the same. It is possible to meet the maintenance setting value of the multi-stage circuit breaker at the same time. When the maintenance value of the circuit breaker is set, the time is also set. So, is it possible to make sure it doesn't skip the ranks? Not necessarily because from the point of view of the set value, the moment required for the circuit breaker to completely disconnect the faulty current is not only the moment of fundamental judgment, but also the moment of action of the machine itself, which varies with the performance of different data and equipment.
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